Protective effect of MK on KA-induced GABAergic neuronal cell death. Numbers of GAD67+ neurons were counted in subregions of hippocampus from PBS, KA (0.2 μg/mouse), and KA plus MK (0.4 μg/mouse)-injected mice; strata oriens (SO), pyramidale (SP) and radiatum (SR) of CA1 (A) and CA3 (B) and all layers of dentate gyrus (C) (ML; molecular layer, GCL; granule cell layer, DH; dentate hilus). Data are presented as mean ± SEM. * p < 0.05, as compared with PBS. # p < 0.05, as compared with KA. One-way ANOVA, Student-Newman-Keuls multiple comparison test.